Machine for and method of forming tapes



Feb. 12, 1935. WAGON 1,990,849

MACHINE FOR AND METHOD OF FORMING TAPES Patented feb. 12, 1935?4 PATENToFFicE Y MACHINE FOR AND METHOD F FORMING TAPES Jean Wagon, Paris,France Application November 21, 1932, ySerial No. 643,722

Claims.

5 and confectionery, is generally composed of a plurality of parallelstrands held together only j by glue or a similar adhesive. In actualprac'- tice, it has been found that tape of this kind sometimes fallsapart when the glue cracks or breaks. Various remedies have beenproposed for overcoming this diiiiculty but none have entirelysucceeded. For example, it has been suggested that the longitudinalstrands oi which the tape is composed be held together by a spiralstrand or strands enveloping all of the longitudinal strands. But, whentape is manufactured in this way, the lateral pull of the spiral strandon the longitudinal strands causes the latter to bunch so as to nolonger lie in juxtaposition.

One of the objects of the present invention is to provide a spirallywound tape wherein none of the longitudinal strands are superposed butlie in juxtaposition to one another to form a ribbon of substantiallyconstant width.

Another object is to provide a method for winding al spiral strandaround a plurality of longitudinalstrands so that the latter remain injuxtaposition.

A further object of the invention is to provide a machine operative toexert an increased tension on the lateral strands forming part of aplurality of `juxtaposed strands, whereby a spiral 'strandwoundthereabout no longer acts to move adjacentlongitudinal strands out ofthe plane in which they lie. t

Still further objects will appear in the course of thedetaileddescription now to be given with reference to the .accompanyingdrawing in which:

A Figure 1 is an elevation showing one illustrative embodiment of theinvention;

Figure 2 is an axial enlarged detail of the more important portions ofthe machine represented in Figure 1; K

Figure 3 is a perspective showing, in detail, how the longitudinalstrands are maintained under tension and in proper relation to oneanother during and after the operation of winding a spiral strandthereabout.

Referring to the various iigures of the drawing, there is shown anassembly comprising a frame a, a post or support b, a hollow sleeve crigidly supported on post b, a guiding cylinder f provided with aplurality of 'grooves and Belgium December 10, 1931 l adapted to guidethe longitudinal strands of which the tape is composed, a at support orplatform' g positioned to receive the, strands passing from guide'f, a'rotatable collar or journal h supported on ball bearings on elemente anddriven by a suitable transmission such as is shown diagrammatically inFigure 1, a pair of spools supported on a pair of radial arms -rigidlymountedton collar h and adapted to provide strands to be spirally woundabout the l0 longitudinal strands of the tape, a pair of braking guidesk adapted to exert a braking action on spiral strands :i being fed fromspools i, a

guiding roller l receiving thread or strands from a plurality of spoolsn, a grooved roller m posil5' tioned to receive strands from roller land to ,guide the latter through element c onto grooved guide f, abraking elementA or elements o. formed of .a pair of spaced meshingteeth and interposed between guides l and m, elements o 20 serving tomaintain at least the most lateral strands composing the tape underincreased tension, a support p having-av vertical guiding slot formedtherein, a -pair of guiding and tensing ,rolls .q and q1 adjustablysupported in the 25 'Y guiding slot in support p, roll q resting by itsWeight on roll q1 and being positioned to lie tangentially, andpractically in contact with one end of element g, an adhesive container1', a

gas or electric heater r1v adapted to maintain 30 the glue oradhesive-in 'a liquid state,` a roller s extending into the adhesivecontained, in element r, a pair of lateral supports p which may be madeintegral with support p `Aand having vertical gluiding slots formedtherein; a pair of 35 superposed' rollers s y and s resting bytheirweight on one another and on cylinder s, a drier of conventionaldesign t and a winding-up spool u.

The hereinabove described assembly operates 40 in the following way:motive power for rotating elements h, t and u is provided by a motorandconventional transmission as shown in Figure 1; assuming a plurality oflongitudinal strands to have been. drawn successively over elementi 45through braking element o, over guide roller n through c over roller f,into contact with support y; then successively over rolls q and q1 inthe manner shown in Figure 3, and nally over rollers s and sf throughdrier t onto wind-up 50 spool'u, rotation of the motor will cause driedt and wind-up spool u to draw lateral longitudinal strands d and centrallongitudinal strands y el through the machine while spiral thread y' lis wound by spools i around said strands and around support a; thespirally wound thread will be then drawn through the adhesive and, afterbeing squeezed between s1 and s to remove excess adhesive, will passthrough drier t and be wound in a nished condition on spool u.

The main contribution of the present invention resides 1) in employingbraking element o for lateral threads d so 'as to increase the tensionon the latter and so prevent their moving inward under the action ofspiral threads 7', (2) in extending platform g toa point just adjacentroller q so as to'mainta-in a lateral pull on spiral threads i and sofurther prevent guided tangentially betweena pair of superposed rollerswithout passing from over the surface of one onto the surface of theother in the manner shown in Figure -3, lateral collapse of the tape mayoccur and lateral strands d maymove inward to lie in superposed, insteadof juxtaposed, relation to central strandse.

The invention is not to be taken as limited vto the particular tapeabove described: thus,`

some of the strands e may be deflected either upwardly or downwardlyprior to the spool winding operation and may be deflected back to lie insuperposed relation to spirally wound tape forni l as above described;several bobbins of the type, may be used instead of'oneandmay be evenmounted to turn in opposite directions so that spirals i are laid inopposite directions on the longitudinal strands; all of central strandse may be maintained under tension in breaking elements of the type o inaddition to lateral strands d, etc.

What I claim is:- 1. A method of forming a wrapping tape comprising thesteps of arranging a pair of lateral strands and a plurality of centralvstrands to lie under tension in substantially parallel relation,subjecting said lateral strands to additionaltension, wrapping a strandaround said lateral strands and binding all of said strands togetherwith an adhesive. A

2. In combination a machine including means for drawing a pair oflateral strands and a plurality of central strands under tension there--through, means forA winding a strand around said lateral strands, andmeans for applying adhesive to all of said stranda-means for applyingmore tension to said lateral than to said central strands during theirpassage through the machine.

3. A structure as deflned in claim 2 'in com-1 bination with a supportmounted in the course of movement of said lateral and said centralstrands, and a guide roller positioned adjacent A oneend of said supportand in substantially tangential relation thereto.

4. A structure as deilned in claim 2 in combination with a support forsaid pair of lateral and said plurality of central strands mountedadjacent the course of movement of said strands, a rst guide rollerpositioned adjacent one end of said support and in substantiallytangential relation thereto, and a second guide roller Apositionedadjacent said first guide roller, whereby the various strands may passfrom said support over the surface of said first roller, then betweensaid rollers, and ilnally over the surface of said second roller.

5, Ihe method of operating a machine provided with means for guiding aplurality ofY strands therethrough, a support positioned along the pathof movement of said strands, and a bobbin operative to wind a strandaround said plurality of strands comprising the steps of' guiding thestrand coming from said bobbin so as to pass through said support aswell as around the various other strands, maintaining all of `thestrands in substantially the same relative transverse position as theyoccupy when they slide oil! of said support, and passing all of saidstrands through an adhesive.

" JEAN WAGQN.

